The Amiga is alive - sort of, and AmigaOS 4 is finally out. Ars takes AmigaOS 4 out for a spin to see where the once-popular platform stands these days. "The release of AmigaOS 4 proves one thing: you can't keep a good platform down. But is AmigaOS merely a fun hobby OS to play around with, or does it offer real value? My answer is that it is a little of both. As a fan of alternative platforms, you won't find many that are more esoteric than AmigaOS. But beyond being different for the sake of being different, OS4 provides something more interesting: a chance to experience a whole new way of computing."